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镰刀菌的变异性很大,但人们对棉花枯萎镰刀菌的变异性及其致病力能否变化研究尚少。近年,我们根据新疆各地棉花枯萎病菌致病力发生变化的情况,采用寄主组织液诱导培养的方法,探讨其变异的原因。反复试验表明,在同一自然条件下连续多年种植同一品种,能够导致棉枯萎病菌致病力发生变化,并产生新的致病类型。 供试的生理Ⅱ型菌株(胜站菌株)采自吐鲁番市胜金乡农科站棉花枯萎病自然病圃经分离纯化而得,生理Ⅲ型菌株(胜三菌株)采自吐鲁番市胜金乡胜利三队海岛棉田经分离纯化而得。1985年4月至5月下旬,我们在室内将感病品种海岛棉8763И和陆地棉
Fusarium variability is great, but people’s research on the variability of Fusarium oxysporum f. In recent years, according to the changes of pathogenicity of Fusarium oxysporum f. Sp. In Xinjiang, we used the methods of induced tissue culture of host tissues to investigate the causes of the variation. Repeated experiments show that under the same natural conditions for many years of planting the same species, can lead to pathogenic Fusarium wilt pathogens change, and produce new types of pathogenic. Physiological type Ⅱ strains (strains of Staphylococcus aureus) were collected from natural blight of cotton blight in Shengjin Township, Turpan City. The strains of Physiological type Ⅲ (Sheng3 strains) were collected from Shengjin Township, Turpan City Victory trio island cotton field obtained by separation and purification. April 1985 to late May, we will be susceptible varieties of indoor island cotton 8763И and upland cotton